First mate John Doyle and Captain Tim Flannery set off for the upper tributaries of the Murray Darling rivers, but their first launch spot is bone dry.

John Doyle and Tim Flannery follow Henry Lawson's 1890s journey to the sheep station Toorale, navigate the muddy gutter to Louth, and travel to the dry, ancient Lake Menindee.

After 2000 kilometres, John Doyle and Tim Flannery arrive in Wentworth, New South Wales, where the Darling meets the Murray.

John Doyle and Tim Flannery find travel on the Murray significantly faster than on the dry Darling, but when they camp, they're not sure whether they're in New South Wales or South Australia.

John Doyle and Tim Flannery begin the last leg of their journey and reach Lake Alexandrina on Day 46, then continue on to the end of the Murray and the ocean.